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Pruning guide · Perennial
Bearded iris: when and how to prune
Iris germanica
Bearded iris is best pruned in June–July and October.
| Pruning months | June–July and October |
|---|---|
| Flowering | May–June |
| Native to Belgium | No, planted |
| Poisonous to people and pets | Yes, take care with children and pets |
Bearded iris: when to prune it?
In June after flowering for the flower stems, in July–August when dividing for the leaves, and in October for dead foliage.
Bearded iris: how to prune it?
- After flowering, cut the flower stems off just above the rhizome.
- Leave the green leaves as long as possible: they build up reserves for next year’s flowers.
- When dividing or replanting, trim the leaves at an angle to about 15 cm.
- In autumn, remove brown, dead leaves: slugs and fungi then have fewer places to hide.
How much to cut, and how often?
- There are 2 pruning periods a year: June–July and October. You don’t have to prune in every one.
What does it mean for wildlife?
- Don’t cut more than you need to: what stays standing gives insects and birds food and shelter.
Caution: Do not cut green leaves short in summer for no reason: it weakens the plant and costs flowers. Bearded iris is poisonous: wear gloves and keep clippings away from children, pets and livestock.
Nearby: related pruning guides
Plant profile: Bearded iris · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.